conditional

WHO_CDS_TB_2019_1_7

Particulate respirators, within the framework
of a respiratory protection programme, are
recommended to reduce M. tuberculosis
transmission to health workers, persons
attending health care facilities or other persons
in settings with a high risk of transmission.

WHO_CDS_TB_2019_1_6

Ventilation systems (including natural, mixed-mode,
mechanical ventilation, and recirculated air through
high-efficiency particulate air [HEPA] filters) are
recommended to reduce M. tuberculosis transmission to
health workers, persons attending health care facilities or
other persons in settings with a high risk of transmission.

WHO_CDS_TB_2019_1_5

Upper-room germicidal ultraviolet (GUV)
systems are recommended to reduce
M. tuberculosis transmission to health
workers, persons attending health care
facilities or other persons in settings with a
high risk of transmission.